Development of platform for acquisition of individual Head-Related Transfer Functions and its evaluation

• Project/Area Number: 17K00242
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Perceptual information processing
• Research Institution: Akita Prefectural University
• Principal Investigator: Takane Shouichi 秋田県立大学, システム科学技術学部, 准教授 (90236240)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 頭部伝達関数 / HRTF / 頭部インパルス応答 / HRIR / 主成分分析 / 3Dスキャナ / 3Dプリンタ / 頭部形状 / 頭部モデル / 境界要素法 / 複素対数振幅 / デジタルカメラ / 耳型 / プラットフォーム / 個人性 / バーチャルリアリティ

Outline of Final Research Achievements

This research had its aims at construction of a platform for acquisition of individual Head-Related Transfer Functions (HRTFs) with possibly less physical load to the subject. Together with a new method for the measurement of HRTFs in sound field with reflection, a new platform for acquisition of human 3D head and pinna shapes was successfully constructed with a 3D scanner, a digital camera and a 3D printer. The HRTFs of multiple subjects were acquired by using their 3D models as outputs of the system. As a result, the acquired HRTFs from the 3D models were close to those from the real ones for some cases, but there remained some issues on the difference in accuracy of the HRTFs depending on the subjects.

Academic Significance and Societal Importance of the Research Achievements

個人の耳介を含む正確な頭部形状を得るための手法を，3Dスキャナや3Dプリンタなどの機器を利用することで確立できたことには大きな学術的意味があると考える．ただし，本研究の現状での結論としては，そのことだけでは個人の頭部伝達関数を高い精度で得ることには必ずしもつながらないことも残念ながら明らかとなった．

Research Products

• [Journal Article] Subjective evaluation of Head-Related Transfer Functions reconstructed with Spatial Principal Component Analysis and their domain dependency (2019)
  • Author(s): Shouichi Takane, Keisuke Sakamoto, Koji Abe, Kanji Watanabe, Masayuki Nishiguchi
  • Journal Title: Proc. 23th International Congress on Acoustics Volume: 1 Pages: 1-8
  • Peer Reviewed / Open Access
• [Journal Article] Spatial Component Analysis of Head-Related Transfer Functions using their complex logarithms with unwrapping of phase (2019)
  • Author(s): Shouichi Takane
  • Journal Title: Proc. 23th International Congress on Acoustics Volume: 1 Pages: 1-8
  • Peer Reviewed / Open Access
• [Journal Article] 頭部伝達関数の音源位置による変化の複素対数領域における主成分分析 (2019)
  • Author(s): 高根昭一
  • Journal Title: 日本音響学会春季研究発表会講演論文集 Volume: 3-6-20 Pages: 305-308
• [Journal Article] 3Dスキャナ・3Dプリンタを利用した個人の頭部伝達関数の取得 (2018)
  • Author(s): 高根昭一，高橋幸太，安倍幸治，渡邉貫治，西口正之
  • Journal Title: 第23回バーチャルリアリティ学会大会論文集 Volume: 11B-3 Pages: 1-4
• [Journal Article] Estimation of individual Head-Related Impulse Responses from impulse responses acquired in ordinary rooms based on the spatial Principal Components Analysis (2017)
  • Author(s): Shouichi Takane
  • Journal Title: Journal of Information Hiding and Multimedia Signal Processing Volume: 8 Pages: 1405-1419
  • Peer Reviewed / Open Access
• [Presentation] 頭部伝達関数の音源位置による変化の複素対数領域における主成分分析 -位相成分の重み付けに関する検討- (2019)
  • Author(s): 高根昭一
  • Organizer: 日本音響学会 秋季研究発表会
• [Presentation] Spatial Principal Component Analysis of Head-Related Transfer Functions using their complex logarithms with unwrapping of phase (2019)
  • Author(s): Shouichi Takane
  • Organizer: International Congress on Acoustics 2019
  • Int'l Joint Research
• [Presentation] Subjective evaluation of Head-Related Transfer Functions reconstructed with Spatial Principal Component Analysis and their domain dependency (2019)
  • Author(s): Shouichi Takane, Keisuke Sakamoto, Koji Abe, Kanji Watanabe, Masayuki Nishiguchi
  • Organizer: International Congress on Acoustics 2019
  • Int'l Joint Research